As the firestorm is going to be a keeper at this present time. the 90s and 20s honda's have a auto cam chain tensioners that work really well till they do not .on the twins and 4s when they go they give you warning but on the v twin and v4 its not so good and if you get a firestorm and they have not been changed £35 or ten times that if your lucky.they are a poor design and the manual replacement are cheep and reliable